Description
ZW32-40.5 outdoor high-voltage AC vacuum circuit breaker adopts a unique design of integrated solid sealed pole and a highly reliable operating mechanism. The device is mainly used in medium voltage overhead line power grid as load current, overload current and short-circuit current.
Specifications
| No. | Item | Unit | Data |
| 1 | Rated voltage | kV | 40.5 |
| 2 | rated current | A | 630/1250/1600 |
| 3 | rated frequency | Hz | 50 or 60 |
| 4 | Power frequency withstand voltage 1min (wet) (thousand) phase-to-ground/fracture | kV | 95/118 |
| 5 | Lightning impulse withstand current (peak value) phase-to-ground/fracture | kV | 185/215 |
| 6 | Rated short-circuit breaking current | kA | 25/31.5 |
| 7 | Rated short-circuit making current (peak value) | kA | 63/80 |
| 8 | Rated peak withstand current | kA | 63/80 |
| 9 | Rated short-time withstand current and time | kA/s | 25/31.5/4s |
| 10 | Rated operating cycle | O-0.3s-CO-180s-CO | |
| 11 | Rated short-circuit current breaking times | times | 30 |
| 12 | Mechanical life | times | 10000 |
| 13 | Mechanism control voltage | V | AC/DC220 |
| 14 | Secondary circuit 1min power frequency withstand voltage | kV | 2 |
| 15 | Contact distance | mm | 17±1 |
| 16 | Contact overtravel | mm | 4±0.5 |
| 17 | Opening speed | m/s | 1.6±0.3 |
| 18 | Closing speed | m/s | 1.6±0.3 |
| 19 | Contact closing bounce time | ms | ≤3 |
| 20 | phase center distance | mm | 460±2 |
| 21 | Three-phase opening and closing asynchronous | ms | ≤2 |
| 22 | Conducting loop resistance of each phase | μΩ | ＜80 |
| 23 | Closing time | ms | ≤100 |
| 24 | Opening time | ms | ≤50 |
| 25 | weight | kg | 270 |
